Burner for furnaces



July 3, 1923.

H. F. CLARK I v BURNER FOR FURNACES Filed April 9. 1921 2 Sheets-Sheet 1 July 3, 19 23.

H. CLARK BURNER FOR FURNACES Patented July 3, 1923.

"UNITED" s TATES HENRY r. CLARK, oroAKMoNr, rnnnsrnvenra'nssrenonirocwrnbow' Grass Y MACHINE COMPANYQOF rrrrssuR-en,'rEnnsY vAmA, A conronn'rron.or f' NEW ERSEY.

' .Oakmont, in, the county of Allegheny and State of Pennsylvania, have'invented a new" and useful Improvement in Burners for Furnaces, of which the following is a'full,

' clear, and exact description;

My invention relates to burners for fi lnaces, and is particularly useful with glass pot furnaces usedin drawing, glass,- but it.

of course may be used with other'heating devices. My burner i-sapplicable to such devices-when it is desired to use raw producergas. The object of my invention is' a simple a'rrangement for'use inburning raw producer gas and such a devicewhich will, by reason of the features hereinafter described, be kept clean notwithstanding the presence/of considerable quantities of heavy hydrocarbons. A further object of my invention is such a device which will thoroughly mix the gas and air so as tojefi'ect a completecombustion.

A still further objectof my invention is. to v somewhat retardthe flow of the mixed gasand air through a comparatively long mixing and partial combustion passagebefore the. mixture isdischarged into the heating chamber, forfithe purpose of securing a complete combustion in the heating chamber, thus avoiding the deposit of soot and other objectionable matter in the heating chamber or on the usual glass pot whenthe device is used in connection with glass drawing Inachinery.

' y These and other objects will be more fully I appreciated as the device is described in de:

tail, in connection with the accompanying drawings forming apart thereof, and in which: I

- I Figure 1 is a sectional elevathinofthe burner; shown in connectionwith a glass pot furnacep p. f.

Figure 2 is a plan view of the device. showninFigure1; v f t Figure 3 is a section on the line III-III of Figureil; and I U 2V T Figure 4 is'a section on the, line IVs-IV I. In Figure 1 I have shown a gas main 1 of any. desired; construction, supported by a frame structure 2. A gas port 3 is connectby' a valve arrangement 9 of any suitable BURNER r03. runnnons.

1921. Serial no. 45e', es. Q

v ed .with maintlthrough Wh c may, be closed by thesaucer valve 5; which is operated by a hand-wheel S or" other suitable means. A man-hole 7 isprovided in the endof the port 3 for-purposes i =Thel'port 3 is alsoprovided with a vertical well understood.

dust leg 8, which is; closed at the lower end] character.) j, p p

The exit end of. the port 3. is somewhat; contracted by the refractory lining, as"

shown at 10. Across the'end of the port are placed 1 two adjustablefplates of slides plates are held in place by the members :13'

11 and 12, as best shown inFigure' l.

and 14 and ma'y beadjusted to provide any desired sizeof opening 15 between the'edges" r of said plates. From Figure, it willbel a noted that the opening "15 is rectangular in, 5w.

shape, thus providing for awideithin streamof gas which issues therefrom at, consider-," able velocity; the gas in thejport 31bei ng under pressure.

i- .djacent the discharge endio-f the port 3' is placed a separate member 16. This' meme] ber has a flared ffend 17 which has plates 18 and. 19 arranged in the end. .thereofthe if same mannerasthe plates lland 12ers an arranged in the end ofthegas poi-t3,v The, plates 18 and 19 .are held; by friction,

means ofthe membersQQa-nd21, and may, f. be adjusted to vary the amount of air which will be taken into the memberQlG, "as will be} later explained. It;mayybe.noted. at,thisd-f the member. 16' and the port 3 is o en-to point. that the space between the; ends jof,

atmosphere, I I The chamber insidethe member lfi'may be designated asa mixingkand partial combustion chamber, because in this chamber the The mixing and partialcombustion chamber 23 gradually increases in erosssection to ward the pot furnace or heating chamber 22;

and-atthepoint where thechamber 23 enters the furnace the said passage. isinclind downwardly, as shown at.24. .-'1h1s;is

for

the purpose of; directing the mixture toward the bottom of the furnace or heating 'eha g her, I I given a swirling motion by comingl n con 9-5; air and gas are mixed astheyfl wiowa j v the pot furnace or. heating cha ber. 22

and the combustion-mixturev isthen; i

and in that manner the gas and air are further mixed and a complete zcombustion takes place. 1, v v a k I V The furnace is supported by any desired foundation structure 25, and the member 16 is suspendedby members 26 which are carried by the beams and" angle 28; and in like manner one end of the gas port 3 is carried by the members 29 supportedby an angle 30 which rests on the beamsQY. will, ofcourse, be understood that any suit able or desired arrangement may be pro- In operation,

vid difor, carrying these parts, and this sup-' qortin meansv forms no art of m invena as.

passes through the connection li-ntoth'e port 3fl'eely, because the saucer] valve 5 is normally inthe PQSltlOIl; shown in F gure l.

Therefore, thepressure in the port 3 is the same asin the main 1. Thelieavlest hydrocarbons in the gas willbe deposited invthe dust legor clean-out chamber 8, dueto the eddy 'fO1fm8Cl Ll3 the point immed ately over The gasjwill' the upper'ei idbf the leg 8. then:,-1ssue 1n a w de, th n stream'through the o-pening liand having an injector effect,

will draw air in withit from; the, atmosphere throughthe opening between the plates on the end otthe port 3 and thosepn the end of the member 16. v By this injector eiiect, a highly combustibleinixtureis secured, which has considerable velocity as it is drawn in -.through the flared end 1 of the member 16.

Additionallvelocity is given by reason; of:

f the natural upward draft produced bythe arrangement shown, in which the, end 17,

of the memberltl is at. a substantial distance below-the bottom of the furnace 22. As this migrture travels toward the furnace, the

chamber 23 gra llally increasing in cross section a [shghtdecrease in velocity is caused and therefore what might be termed a iilazyr'flame e ult During the passage of: mixture through the chamber 23, the ,and are] completely mined and issue 3 the [point "24 a into the furnace, where "die Qm l S Q is; comp te and. a ry n:

tense flame results, thus avoiding the forrna of; any deleterious products either on the furnace bottom and} walls oron the pot which iriust befkept perfectly clean out w der to avoid trouble in the glass drawing operation; ,The pot 31" of the reversible We? bar n a al t in t s de there of; 0. 39 9, whl h @h iibe sis e ngs melted Ie the drawing operation is proceed:

' 111;: fr m the p e he p -re is? large s t en rev rsed, and. the first chamber-filled lY t gmgltengl ss while the otherchainber s gmlt d ut I ..v r. llj'a'lso benoted that the furnace is 4 thanlis ordinarily employed, which, in QQIlTlblIlSltlOlfl with tliei particular arrange- ,de q b dr q fe a r at r mbus n chamber which aids materially inthe completenesso-f the combustion of the mixture in the heating'c'hamber. Y '1 My invention has the advantages that it is simple in construction; it readily burns keep 01' care'whiclrwould'otherwise benec-t essary;

' I Cltlll'll v I L j H 1 A producer gas combust1on' apparatus for glass furnaces or the like, comprising If? a l e y large h g c-h'a iberfa mix; ing combustion chamber communicating therewith, vsai'd glast chamber gradually lefisingin cross section towards saidheating chamber, and air and producer gas'te'ed'ing I a means communicating with said ,mizging chamber at a distance from said heating chamber, substantially as describedly 3 72. A producer ,gascombustionapparatus,

for glass furnaces and the like, comprising I an air passage, a producer gas passage,,a f relatively large heating chamber, and a'miX-' ing and combustion chamber withwhich said air and gas passages commun1cate,sa1d mixmg and combustion chamber gradually "111 creasing in cross section towards said heat:

ing chamber, substantially as"d escr.ibed. V

A producer gas combustionapparatus for glass furnaces and the like, comprising a relatively large heatingchamberfa ielaEQ tively long mixing and partial combustion passage gradually increasing 'infcros'sfsec tion towards said heatin'gchamber and. with which it connects near the bottom of said chamber, and fuel and air-passages leadingseparately into said mixing passage at aKdi'stance from said heating chamber, "substan tially as described. I

4. A producer gas combustionapparatus for glass furnaces and the like, comprising a ,heating chamber, a mixin 'and' partial combustion chamber connecting with said heating chamber, a fuel supply passage of small area for feeding producer gas at high velocity into said mixing cha mber,"and separate air supply means for mixing air'with sa1d gas at a distance from saidheating amber, substantially described; 5; A producergas combustion'ap'paratus a heating chamber, a mixing andpartial combustion passage leading into theilower part of said heatingvcham'ber from a point for glass furnaces and thelike, comprising. 2,.

asubstantial distance"below'the said lead;

ing in point, and separate air and producer gas supply means leading into said mixing passa e, substantially as described.

6. K. producer gas combustion apparatus for glass furnaces and the like, comprising a heating chamber, a mixing and partial combustionpassage leading into the lower part of said heating chamber from a point a substantial distance below the said leading in point, the said passage then directing its contents downwardly towards the bottom of said heating chamber, and air and producer gas supply means leading into said passage at a distance from said heating chamber,

substantially as described.

7. A producer gas combustion apparatus for glass furnaces and the like, comprisinga producer gas supply means having a narrow gas outlet subjected to full gas pressure and a clean-out chamber adjacent said outlet, independent air supply means surflared end, and a heating chamber into which said chamber leads, substantially as described. i

9. A producer gas combustion apparatus for glass furnaces and the like, comprising a heating chamber, a producer gas supply means, a separate mixing and partial combustion chamber adjacent the delivery end 3 of said gas supply means" and separated therefrom sufliciently to allow a free supply of air, said chamber graduallyincreasing cross section and communicating 'wit said heating chamber, substantially as described. i

10. A producer 'gas combustion apparatus for glass furnaces and the like,co'mpri'sing a raw. producer gas supply means, a gas port for closing said port connection, a thin narrow gas outlet from one end of said port, a clean-out chamber underneath said outlet, a mixing chamber adjacent said gas outlet and having-a flared end towards said outlet and separate therefrom to allow free supply of air, said chamber gradually increasing 1n. cross section away from said flared end, and' a heating chamber into which said chamber opens, substantially as described.

11. A producer gas combustion appara tus for glass furnaces and the like, compris-' ing a raw producer gas supply means, a gas connecting directly with said means, a valve y port connecting directly with saidmeans, a valve for closing said port connection, a

thin narrow gas outlet from one end of said port, a cleanout chamber underneath said outlet, a mixing chamber adjacent said gas" outlet and having a flared end towards said outlet and separate therefrom to allow .free

supply of air, saidchamber gradually increasing in cross section away from said flared end, and a heating chamber into which said chamber opens by a downwardly directed portion and ata point a substantial set my hand.

' HENRY CLARK.

distance above said flared end, substantially v as described. 5

In testimony whereof, I have hereunto 

